MathML Attribute Values
MathML-specific types
In addition to CSS data types, some MathML attributes accept the following types:
<unsigned-integer>: An<integer>, whose first character is neither U+002D HYPHEN-MINUS character (-) nor U+002B PLUS SIGN (+); for example1234.<boolean>: A stringtrueorfalserepresenting a boolean value.
Legacy MathML lengths
Instead of {{cssxref("length-percentage")}}, MathML used to define its own type to describe lengths. Accepted values included non-zero unitless length values (e.g. 5 to mean 500%), values containing numbers ending with a dot (e.g. 34.px), or named spaces (e.g. thinmathspace). For compatibility reasons, it is recommended to replace non-zero unitless length values with equivalent {{cssxref("percentage")}} values, to remove unnecessary dots in numbers, and to use the following replacement for named lengths:
veryverythinmathspace => 0.05555555555555555em
verythinmathspace => 0.1111111111111111em
thinmathspace => 0.16666666666666666em
mediummathspace => 0.2222222222222222em
thickmathspace => 0.2777777777777778em
verythickmathspace => 0.3333333333333333em
veryverythickmathspace => 0.3888888888888889em
Units
| Unit | Description |
|---|---|
em | {{ Cssxref("font-size", "Font-relative") }} unit |
ex | {{ Cssxref("font-size", "Font-relative") }} unit. (The "x"-height of the element, 1ex ≈ 0.5em in many fonts) |
px | Pixels |
in | Inches (1 inch = 2.54 centimeters) |
cm | Centimeters |
mm | Millimeters |
pt | Points (1 point = 1/72 inch) |
pc | Picas (1 pica = 12 points) |
% | Percentage of the default value. |
Constants
| Constant | Value |
|---|---|
veryverythinmathspace | 1/18 em |
verythinmathspace | 2/18 em |
thinmathspace | 3/18 em |
mediummathspace | 4/18 em |
thickmathspace | 5/18 em |
verythickmathspace | 6/18 em |
veryverythickmathspace | 7/18 em |
negativeveryverythinmathspace | -1/18 em |
negativeverythinmathspace | -2/18 em |
negativethinmathspace | -3/18 em |
negativemediummathspace | -4/18 em |
negativethickmathspace | -5/18 em |
negativeverythickmathspace | -6/18 em |
negativeveryverythickmathspace | -7/18 em |